Paper No. 99004 of the Journal of the American Water Resources Association.Discussions are open until June 1,2001.
THE EFFECT OF RESIDENTIAL DEVELOPMENT ON GROUND-WATER QUALITY NEAR DETROIT, MICHIGAN†
Article first published online: 8 JUN 2007
JAWRA Journal of the American Water Resources Association
Volume 36, Issue 5, pages 1023–1038, October 2000
How to Cite
Thomas, M. A. (2000), THE EFFECT OF RESIDENTIAL DEVELOPMENT ON GROUND-WATER QUALITY NEAR DETROIT, MICHIGAN. JAWRA Journal of the American Water Resources Association, 36: 1023–1038. doi: 10.1111/j.1752-1688.2000.tb05707.x
- Issue published online: 8 JUN 2007
- Article first published online: 8 JUN 2007
- ground-water quality;
- Cl/Br ratios;
- residential development
ABSTRACT: Two water-quality studies were done on the outskirts of the Detroit metropolitan area to determine how recent residential development has affected ground-water quality. Pairs of monitor and domestic wells were sampled in areas where residential land use overlies glacial outwash deposits. Young, shallow waters had significantly higher median concentrations of nitrate, chloride, and dissolved solids than older, deeper waters. Analysis of chloride/bromide ratios indicates that elevated salinities are due to human activities rather than natural factors, such as upward migration of brine. Trace concentrations of volatile organic compounds were detected in samples from 97 percent of the monitor wells. Pesticides were detected infrequently even though they are routinely applied to lawns and roadways in the study area. The greatest influence on ground-water quality appears to be from septic-system effluent (domestic sewage, household solvents, water-softener backwash) and infiltration of storm-water runoff from paved surfaces (road salt, fuel residue). No health-related drinking-water standards were exceeded in samples from domestic wells. However, the effects of human activities are apparent in 76 percent of young waters, and at depths far below 25 feet, which is the current minimum well-depth requirement.